<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="../../vue.js"></script>
</head>

<body>
    <div id="app">{{message}}</div>
    <script>
        new Vue({
            el: "#app",
            data: {
                message: "数据",
            },
        });
        setTimeout(() => {
            this.message = "改变数据";
        }, 1000);
    </script>
</body>

</html>